How many signatures are required to start the formal decision making stage of a direct democracy mechanism?

Law on Referendum (1995, last amended in 2008)

http://aceproject.org/ero-en/regions/asia/KZ/kazakhstan-constitutional-law-on-referenum-1995/view

Article 11. Initiative to appoint the republican referendum

[...]

4) at least by 200 thousand citizens of the Republic eligible to take part in the republican referendum, who quantitatively and equally shall represent all oblasts, capital of the Republic and city of the republican status, who shall request the President of the Republic to appoint a referendum.

200,000 citizens